acl, attr: upgraded packages to upstream

Upgraded sys-apps/attr to version 2.5.1 & sys-apps/acl to version
2.3.1 for newer EAPI.

BUG=b:187789240
TEST=CQ passes

Change-Id: I4ebff7996e059e18a542798eb2ffe2a1b34500d2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3183044
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
12 files changed